10 pack purple molecule balls, for additional or replacement parts for molecular model kits (used to provide a visual and kinesthetic aid for studying the structure and properties of various molecules). Each ball measures 2.2cm in diameter and has 5 holes.
10 pack purple molecule balls, for additional or replacement parts for molecular model kits (used to provide a visual and kinesthetic aid for studying the structure and properties of various molecules). Each ball measures 2.2cm in diameter and has 5 holes.